UNSPSC 47101532: Settling tanks

UNSPSC 47101532 Settling tanks is a Commodity code covering clarifier mechanisms, drive systems, and related equipment procured by state and local water and wastewater utilities for treatment plant construction, rehabilitation, and parts replacement. Recent solicitations show state and local governments purchasing complete circular clarifier assemblies with mechanical and hydraulic drive systems, clarifier mechanism rebuilds and reinstallations, replacement particle counters integrated into clarifier processes, chemical blend tanks with associated instrumentation and piping, and authorized OEM parts and maintenance services for existing clarifier infrastructure. Issuing bodies include water departments at county and municipal utilities, departments of water resources, and regional water reclamation facilities. Collier County (Florida), Seminole County (Florida), the City of Charlotte (North Carolina), Gwinnett County (Georgia), the City of Douglas (Georgia), the City of Pendleton (Oregon), the California Department of Water Resources, and Hillsborough County (Florida) have posted recent opportunities under or closely aligned with this code.

Recent activity concentrates in Florida and Georgia, with secondary presence in California, North Carolina, and Oregon. Representative current solicitations include Collier County's construction of a reinforced concrete blend tank with chemical injection systems, mechanical slide gates, and instrumentation for the South County Regional Water Treatment Plant (sealed bid due July 15, 2026, IFB); the City of Charlotte's procurement of a primary clarifier mechanism for McDowell Creek Water Resource Recovery Facility rated for 70-foot diameter basin and 7 million gallons per day peak flow, with acceptable manufacturers limited to Envirodyne, WesTech, Ovivo/Eimco, and Evoqua (ITB FY26-ITB-08, bids due April 8, 2026); the City of Pendleton, Oregon's West Secondary Clarifier rehabilitation including removal of existing mechanism, concrete sump repair, and installation of new clarifier mechanism with updated wipers (sealed bid due June 25, 2026, prequalification required, prevailing wage and DBE provisions apply); the City of Douglas, Georgia's clarifier drive removal, rebuild, and reinstallation for an Evoqua H40 system (sealed bid due March 10, 2026); and Gwinnett County's replacement of 13 Chemtrac PC3400 particle counters at Lanier and Shoal Creek Filter Plants (sealed bid due May 8, 2026, mandatory pre-bid April 16, 2026).